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This is the first part of the Fungible ethernet driver. It deals with device probing, net_device creation, and netdev ops. Signed-off-by: Dimitris Michailidis <dmichail@fungible.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Dimitris Michailidis
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David S. Miller
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Feb 27, 2022
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| /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ | ||
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| #ifndef _FUNETH_H | ||
| #define _FUNETH_H | ||
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| #include <uapi/linux/if_ether.h> | ||
| #include <uapi/linux/net_tstamp.h> | ||
| #include <linux/mutex.h> | ||
| #include <linux/seqlock.h> | ||
| #include <linux/xarray.h> | ||
| #include <net/devlink.h> | ||
| #include "fun_dev.h" | ||
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| #define ADMIN_SQE_SIZE SZ_128 | ||
| #define ADMIN_CQE_SIZE SZ_64 | ||
| #define ADMIN_RSP_MAX_LEN (ADMIN_CQE_SIZE - sizeof(struct fun_cqe_info)) | ||
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| #define FUN_MAX_MTU 9024 | ||
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| #define SQ_DEPTH 512U | ||
| #define CQ_DEPTH 1024U | ||
| #define RQ_DEPTH (512U / (PAGE_SIZE / 4096)) | ||
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| #define CQ_INTCOAL_USEC 10 | ||
| #define CQ_INTCOAL_NPKT 16 | ||
| #define SQ_INTCOAL_USEC 10 | ||
| #define SQ_INTCOAL_NPKT 16 | ||
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| #define INVALID_LPORT 0xffff | ||
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| #define FUN_PORT_CAP_PAUSE_MASK (FUN_PORT_CAP_TX_PAUSE | FUN_PORT_CAP_RX_PAUSE) | ||
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| struct fun_vport_info { | ||
| u8 mac[ETH_ALEN]; | ||
| u16 vlan; | ||
| __be16 vlan_proto; | ||
| u8 qos; | ||
| u8 spoofchk:1; | ||
| u8 trusted:1; | ||
| unsigned int max_rate; | ||
| }; | ||
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| /* "subclass" of fun_dev for Ethernet functions */ | ||
| struct fun_ethdev { | ||
| struct fun_dev fdev; | ||
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| /* the function's network ports */ | ||
| struct net_device **netdevs; | ||
| unsigned int num_ports; | ||
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| /* configuration for the function's virtual ports */ | ||
| unsigned int num_vports; | ||
| struct fun_vport_info *vport_info; | ||
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| struct mutex state_mutex; /* nests inside RTNL if both taken */ | ||
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| unsigned int nsqs_per_port; | ||
| }; | ||
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| static inline struct fun_ethdev *to_fun_ethdev(struct fun_dev *p) | ||
| { | ||
| return container_of(p, struct fun_ethdev, fdev); | ||
| } | ||
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| struct fun_qset { | ||
| struct funeth_rxq **rxqs; | ||
| struct funeth_txq **txqs; | ||
| struct funeth_txq **xdpqs; | ||
| unsigned int nrxqs; | ||
| unsigned int ntxqs; | ||
| unsigned int nxdpqs; | ||
| unsigned int rxq_start; | ||
| unsigned int txq_start; | ||
| unsigned int xdpq_start; | ||
| unsigned int cq_depth; | ||
| unsigned int rq_depth; | ||
| unsigned int sq_depth; | ||
| int state; | ||
| }; | ||
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| /* Per netdevice driver state, i.e., netdev_priv. */ | ||
| struct funeth_priv { | ||
| struct fun_dev *fdev; | ||
| struct pci_dev *pdev; | ||
| struct net_device *netdev; | ||
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| struct funeth_rxq * __rcu *rxqs; | ||
| struct funeth_txq **txqs; | ||
| struct funeth_txq * __rcu *xdpqs; | ||
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| struct xarray irqs; | ||
| unsigned int num_tx_irqs; | ||
| unsigned int num_rx_irqs; | ||
| unsigned int rx_irq_ofst; | ||
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| unsigned int lane_attrs; | ||
| u16 lport; | ||
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| /* link settings */ | ||
| u64 port_caps; | ||
| u64 advertising; | ||
| u64 lp_advertising; | ||
| unsigned int link_speed; | ||
| u8 xcvr_type; | ||
| u8 active_fc; | ||
| u8 active_fec; | ||
| u8 link_down_reason; | ||
| seqcount_t link_seq; | ||
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| u32 msg_enable; | ||
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| unsigned int num_xdpqs; | ||
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| /* ethtool, etc. config parameters */ | ||
| unsigned int sq_depth; | ||
| unsigned int rq_depth; | ||
| unsigned int cq_depth; | ||
| unsigned int cq_irq_db; | ||
| u8 tx_coal_usec; | ||
| u8 tx_coal_count; | ||
| u8 rx_coal_usec; | ||
| u8 rx_coal_count; | ||
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| struct hwtstamp_config hwtstamp_cfg; | ||
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| /* cumulative queue stats from earlier queue instances */ | ||
| u64 tx_packets; | ||
| u64 tx_bytes; | ||
| u64 tx_dropped; | ||
| u64 rx_packets; | ||
| u64 rx_bytes; | ||
| u64 rx_dropped; | ||
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| /* RSS */ | ||
| unsigned int rss_hw_id; | ||
| enum fun_eth_hash_alg hash_algo; | ||
| u8 rss_key[FUN_ETH_RSS_MAX_KEY_SIZE]; | ||
| unsigned int indir_table_nentries; | ||
| u32 indir_table[FUN_ETH_RSS_MAX_INDIR_ENT]; | ||
| dma_addr_t rss_dma_addr; | ||
| void *rss_cfg; | ||
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| /* DMA area for port stats */ | ||
| dma_addr_t stats_dma_addr; | ||
| __be64 *stats; | ||
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| struct bpf_prog *xdp_prog; | ||
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| struct devlink_port dl_port; | ||
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| /* kTLS state */ | ||
| unsigned int ktls_id; | ||
| atomic64_t tx_tls_add; | ||
| atomic64_t tx_tls_del; | ||
| atomic64_t tx_tls_resync; | ||
| }; | ||
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| void fun_set_ethtool_ops(struct net_device *netdev); | ||
| int fun_port_write_cmd(struct funeth_priv *fp, int key, u64 data); | ||
| int fun_port_read_cmd(struct funeth_priv *fp, int key, u64 *data); | ||
| int fun_create_and_bind_tx(struct funeth_priv *fp, u32 sqid); | ||
| int fun_replace_queues(struct net_device *dev, struct fun_qset *newqs, | ||
| struct netlink_ext_ack *extack); | ||
| int fun_change_num_queues(struct net_device *dev, unsigned int ntx, | ||
| unsigned int nrx); | ||
| void fun_set_ring_count(struct net_device *netdev, unsigned int ntx, | ||
| unsigned int nrx); | ||
| int fun_config_rss(struct net_device *dev, int algo, const u8 *key, | ||
| const u32 *qtable, u8 op); | ||
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| #endif /* _FUNETH_H */ |
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